EPDM Rubber Products | Rubber Materials

EPDM Rubber Products

Physical & Mechanical Properties / Chemical Resistance / Thermal Properties / Environmental Performance / EPDM Rubber Applications

What is EPDM Rubber?

EPDM rubber, or ethylene propylene diene monomer rubber, is a high-density synthetic rubber that excels in a wide range of applications, including roofing, outdoor, HVAC, automotive, and industrial uses. Known for its mechanical properties akin to both natural and synthetic rubber, EPDM is a cost-effective alternative to silicone materials, offering enhanced durability and longevity. This means EPDM products last significantly longer, reducing the need for frequent replacements and saving you money.

Versatile and reliable, EPDM rubber is suitable for general-purpose use. However, it is not recommended for applications involving contact with petroleum products, food-based applications, or continuous exposure to aromatic hydrocarbons.

Learn more below about the advantages and properties of EPDM rubber:

Properties of EPDM Rubber

• ASTM D-2000 Classification AA, BA, CA (Standard Classification System for Rubber Products in Automotive Applications)
• Chemical Definition: Ethylene Propylene Diene Monomer
• Abbreviations: EP, EPR, EPT, EPDM

Processing

• Transfer Molding
• Injection Molding
• Compression Molding

Physical & Mechanical Properties

• Durometer: 30 – 90 Shore A
• Tensile Strength: 500 – 2,500 PSI
• Elongation (Range %): 100% – 700%
• Abrasion Resistance: Good
• Adhesion to Metal: Good – Excellent
• Adhesion to Rigid Materials: Good – Excellent
• Compression Set: Poor – Excellent
• Flex Cracking Resistance: Good
• Impact Resistance: Very Good
• Resilience & Rebound: Fair – Good
• Tear Resistance: Fair – Good
• Vibration Dampening: Fair – Good

Chemical Resistance

• Dilute Acids: Excellent
• Concentrated Acids: Excellent
• Organic Acids (Dilute): Excellent
• Organic Acids (Concentrated): Fair – Good
• Inorganic Acids: Excellent
• Alcohols: Good – Excellent
• Aldehydes: Good – Excellent
• Dilute Alkalies: Excellent
• Concentrated Alkalies: Excellent
• Amines: Fair – Good
• Animal & Vegetable Oils: Good
• Non-Petroleum Based Brake Fluids: Good – Excellent
• Diester Oils: Poor
• Alkyl Phosphate Esters: Excellent
• Aryl Phosphate Esters: Excellent
• Ethers: Fair
• Aliphatic Hydrocarbon Fuel: Poor
• Aromatic Hydrocarbon Fuel: Poor
• Extended Fuel (Oxygenated): Poor
• Halogenated Solvents: Poor
• Halogenated Hydrocarbon: Poor
• Ketones: Good – Excellent
• Lacquer Solvents: Poor
• LP Gases & Fuel Oils: Poor
• Mineral Oils: Poor
• Oil Resistance: Poor
• Aromatic Petroleum: Poor
• Non-Aromatic Petroleum: Poor
• Ammonia Refrigerant: Good
• Halofluorocarbons Refrigerant: R-12, R-13
• Halofluorocarbons Refrigerant with Oil: Poor
• Silicone Oil: Excellent
• Solvent Resistance: Poor

Thermal Properties

• Low Temperature Range: -60ºF to -40ºF
• Minimum for Continuous Use (Static): -60ºF
• Brittle Point: -70ºF
• High Temperature Range: +220ºF to +300ºF
• Maximum for Continuous Use (Static): +300ºF

Environmental Performance

• Colorability: Good – Excellent
• Flame Resistance: Poor
• Gas Permeability: Fair – Good
• Odor: Good
• Ozone Resistance: Good – Excellent
• Oxidation Resistance: Excellent
• Radiation Resistance: Good – Excellent
• Steam Resistance: Excellent
• Sunlight Resistance: Excellent
• Taste Retention: Good – Excellent
• Weather Resistance: Excellent
• Water Resistance: Excellent

Applications of EPDM Rubber

Rubber Roofing

• RV roofing
• Roof membranes
• Roof coatings

HVAC

• Gaskets and seals
• Compressor Grommets
• Drain tubes
• Pressure switch tubing

Automotive

• Weather stripping and seals
• Hydraulic brake systems
• Door seals, window seals and trunk seals
• Harnesses (Wire and cable)
• Window spacers

Industrial

• O-rings and hoses (water systems)
• Tubing, grommets, and belts
• Electrical insulation

Caution:

• DO NOT use EPDM rubber in applications involving continuous contact with petroleum-based products.
• EPDM rubber is NOT RECOMMENDED for use in applications involving food or those involving exposure to aromatic hydrocarbons.

Qualiform ISO Certified EPDM Rubber Manufacturer

As an ISO-certified EPDM rubber manufacturer, Qualiform Inc. offers a full range of custom rubber molding services. We have the ability to mold standard OEM replacement stars as well as custom finger lengths and configurations. Our expert technical staff is available for consultation in regard to design and property requirements for customers looking to develop a recycling star for their application or media processing.

As a top EPDM rubber products manufacturer, Qualiform offers unmatched processing, development and testing capabilities.  Qualiform offers custom rubber molding services, rubber compression molding, rubber injection molding, rubber transfer molding, and rubber to metal bonding. We are also experts in problem-solving for all areas of rubber molding and rubber to metal bonding. Our experience allows us to offer reliable, custom solutions for nearly any rubber manufacturing project.

With our 40+ years experience, you can depend on Qualiform for the precision rubber parts manufacturing you need to create high-performance EPDM products. Contact the Qualiform technical staff at (330) 336-6777 to learn more about how we can help you.

Qualiform Proprietary Blend

In addition to high-quality EPDM rubber, Qualiform offers a proprietary blend with reinforcing fibers. Our proprietary blend incorporates reinforcing fibers into the EPDM for enhanced wear resistance, abrasion resistance, durometer, toughness and performance properties. We also offer our proprietary blend for all our available rubber materials:

• Butyl Rubber
• Natural Rubber
• Neoprene Rubber
• Nitrile Rubber
• Rigid & Flexible Rubber
• Synthetic Rubber
• Thermoplastic Elastomers (TPE)
• Viton Rubber